At least three workers were shot dead while three others were injured here in Bakhran on Monday, police said. According to details, some unidentified gunmen attacked a workers' camp here and opened fires on the workers. As a result, three persons were killed. The deceased identified as Sajjad Amed, Rab Nawaz and Mohammad Bux while three others wounded in the incident. After the incident, the injured were shifted to district hospital Dera Ghazi Khan where they were stated in critical condition. Sources said deceased workers were from Panu Aqil, Sindh. Police registered case and started investigation.